My first thought (and impetus for this thread) was the Gloomhaven series of board games.
Love the games. My group of 4 have played OG Gloomhaven, the expansion, digital, Jaws of the Lion, and now we're about 1/2 way through Frosthaven.
About 10 mission into the OG game, we decided to just do away with the Loot mechanic as it sucked and didn't make any sense whatsoever. Why would you go on a mission, kill everything, and then just... leave the loot behind if you didn't grab it in the middle of combat for some reason? If anything, you'd wait until combat was over and then gather things up. Y'know... like every other game on the planet.
What we do instead is just ignore it unless the mission is one where you're on the run or it otherwise wouldn't make sense to be able to loot the area afterwards (like a collapsing cave or somesuch). We feel it's made the game substantially better.